Art McDonald

Director of the Sudbury Neutrino Observatory. Discovered that neutrinos have mass and that they can change from one type of neutrino to another.

"The research that we are doing is fascinating for the fact that it really bridges the entire universe. We are attempting to understand the most microscopic laws of physics that describe fundamental particles. And, in so doing, we try to understand the most detailed things about the universe, how it was created and evolved, in short the origins of the universe."